Dumping body



C. H. BJORKLUND ET AL Deihi y DUMPING BODY .2 Sheets-She et 1 Filed May 13, 1 2

Patented Dec. 30, i924.

PUMPING Application filed Iviay 18,

2' 0 all whom it may concern Be it known that we, C "FFORD if. BJonn- LUND and Jontrr P. Johnson, itizens of the United States, residing at Fergus Falls in the county of Otter Tail 21nd State of Minnesota, have invented certain new and useful improvements in Diunping Bodies. of which the following is a specification, erence being had to the accompanying drz. lDgS- This invention relates to improvements in dumping body constructions for vehicles and more particularly to that type of du1nping body in which the dumping is acconr plished by means of the release of pivoted bottom sections.

An important object of the invention is to provide a body construction applicable to the bodies of motor trucks and which is readily adapted to the body. I

A further object of the invention is to provide a device of this character which by its construction elevates the body proper; so that the movement of the pivotet. sections of the bottom downwardly is not interfered with by the portions of the mechanisms lying therebenesth.

A further object of the invention is to provide a novel and improved trip mechanism controlling; the movement of the bottom sections.

These and other objects we attain by the construction shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of our invention and wherein Figure 1 is a perspective view showing a truck body constructed in accordance with our invention;

Figure 2 is a vertical sectional view therethrough;

Figiire 3 is a fragmentary longitudinal sectional view therethrough;

Figure l is a detail side elevation of the rear end of the tr p rod- .Beferring now more particularly to the drawings, the numeral 10 generally desigates the chassis frame of a motor vehicle which is usually formed of channel iron.

accordance with our invention we a' ply to the upper surface of this frame rearwardly of the cab or drivers seat 11 of the vehicle a supplementalrectangular frame 12 consisting of heavy timbers or the like bolted together as indicated at 1,3, This supplemental frame is held in position upon the 1924. Serial No. 713,054.

upper surface of the chassis frame by means of U-bolts let straddling both the supplemental and chassis frames and extending through clamping plates arranged upon the under surface of the chassis frame. This supplemental frame forms a support for a main body 16 and is made of varying heights dependent upon the type of construction of the vehicle employed to which it is to be applied.

The main body 16 includes sides 17 which incline downwardly toward one another and are spaced from one another at their lower ends a distance slightly less than theinside width of the supplemental frame, so that this lower end will project into the supplemental frame a short distance. The sides are of a length equal to the inside length of the supplemental frame and are connected at their ends by end walls 18. The upper edges of the side walls have vertical portions 19 which may be of any desired height. It will beobvious tl at when a body of this type is mounted upon the supplemental frame it will rest Within this supplemental frame and will be supported from the supplemental frame because of its increased width which causes it to rest thereon. As a means for preventing displacement of the body, due to jars applied thereto in transit, side braces 20 are employed comprising strips of metal secured to and conforming to the shaping of the side walls and their vertical portions 19 at their upper ends and having at their lower ends vertically extending portions 21 through which may be extended se curing bolts for attaching the same to the auxiliary frame. One of these bolts, designated at 21, extends entirely through the body immediately above the bottom thereof, thus tying together the body and auxiliary frame at the center thereof so as to prevent spreading under heavy loads, The upper ends of these members are rigidly attached to the side walls and portions 19 thereof. The side walls are preferably connected to the end walls by angle irons The end walls adjacent the upper ends thereof are provided with beariiigs for a shaft 23 which is preferably formed from three-inch pipe. To this pipe at spacedii-ntervals are connected the ends of fle -ible elements 24 the lower ends of which are branched, as at 525, and connected to the 31djacent edges of bottom sections 26 which meet at the center of the bottom of the body and the outer portions of which are hinged to the lower edges of the sides as at 27. One end of the shaft 23 and preferably the rear end thereof projects through this end wall a sufficient distance to permit attachment thereto of an operating lever 28 which is rotatable upon such rear end and which is of such length that it projects beyond the side of the rear end as indicated. Mounb ed adjacent the forward or cab end of the body upon the outer side wall thereof is a lever 29, this lever being so positioned that it is accessible to a driver located in the cab. To the lever at points spaced from the pivot thereof is connected one end of a rod 30 the opposite end of which is arranged in a guide carried by the side of the vehicle adjacent the rear end thereof as indicated at 31.

the lever 29 is hanging vertically by gravity projects beyond the rear end wall of the body 16 and accordingly into the path of the free end of the lever 28. V

In the use of the dumping apparatus when it is desired to fill the body the lever 28 is rotated until the bottom sections are horizontally disposed when the rod 30 is projected rearwardly into the path .of the lever. Since the bottom sections will tend to move the lever in one tlllGCtlUD, the lever W111 be held in firm engagemei'it with the rod and the rod is preferably provided with a slight notch 32 in which the end of the lever engages so that tendency of the rod to move longitudinally is ordinarily prevented. The tendency, lmwever. may be overcome by applying strain upon the lever 29. It will be obvious that after the load is applied to the bottom the truck may be driven to the place where it is desired to deposit the load and the load deposited by the driver without leaving the drivers seat.

In the construction of the frame and body care is taken that the auxiliary frame is of sufficient height to permit proper opening of the bottom sections of the body without contact with the usual cross members l0 of the frame. Gare is-also taken that the flexible elementsare of sufficient length. par-timilarly asregards those portions connected directly with the bottom sections, that the bottom sections do not open suliiciently to permit the load to drop bodily downward upon the drive shaft and differential of the machine which might be injured if this were permitted.

It Will likewise be obvious that the construction hereinbefore set forth capable of a certain range of change and modification Without materially departing from, the spirit of our invention and we accordingly do not limit ourselves to such specific structure except as hereinafter claimed.

This rod when in its normal position or in that position which it assumes when 1. In a dumping body for vehicles and in combination with the chassis frame of a vehicle, a supplemental frame adapted to be superimposed upon the chassis frame and secured thereto, a body structure of the same length'as the interior-length of the supplemental frame, said body structure being wider at its upper endthan thesuppleinental frame and narrower at its bot tom than said frame whereby the bodymay be inserted into the supplemental frame,

means connecting the supplemental frame a d body for maintaining the body against ift 11g ll'lOVGlllt-illl within the si'ipplemental iiranie, a diunping bottom for said body carried by the body, means for supporting said dumping body in closed position, and means L r for releasing the last named means carried by the body and operable from the forward end thereof.

In eoi'nbination with abody having a V downwardly swinging dumping bottom, means for controllng the bottom comprising a member extending across the body in parallelism to the axis of swing of the bottom section, a lever secured to one end of said member, flexible elements secured to said 7 member and to the free edge of the-bottom parallelism to the axis of swing of the bot.

tom section, a leversecured to one end of said 'member, flexible elements secured to said member and to the free edge of the bottom whereby rotation of the member in one direction will cause the bottom section to be elevated,.a latch rod coacting with said lever in one position thereof project ng into the path of movement of the lever to prevent rotation thereof, said lever being lo cated rearward'ly of the body, and operating means for the rod disposed at the opposite end ofthe body, said'rod having a notch which in the first named position thereof ceives the lever, said lever being held in engagement with the rod by thelweight of the bottom supported from said rotating memher.

In testimony whereof we hereunto aliix our signatures.

CLIFFORD I-l. BJORKLUND. JOHN P; JOHNSON. 

